.color1 {
  width: 0;
  height: 0;
  display: inline-block;
  border-width: 20px;
  border-style: solid;
  border-color: red transparent transparent transparent; }

.color2 {
  width: 0;
  height: 0;
  display: inline-block;
  border-width: 40px;
  border-style: solid;
  border-color: transparent blue transparent transparent; }

.color3 {
  width: 0;
  height: 0;
  display: inline-block;
  border-width: 60px;
  border-style: solid;
  border-color: transparent transparent orange transparent; }

.color4 {
  width: 0;
  height: 0;
  display: inline-block;
  border-width: 80px;
  border-style: solid;
  border-color: transparent transparent transparent green; }
